Clayton Mashapa

Abundance and Structure of African Baobab (Adansonia digitata) across Different Soil Types in Gonarezhou National Park, Zimbabwe

This study investigated the abundance and structure of African baobab (Adansonia digitata) across soil group strata in Gonarezhou National Park, Zimbabwe. The study was based on a stratified random sampling design composed of the following soil group substrates: (i) granophyres, (ii) malvernia, and (iii) rhyolite. Belt transects of  km were randomly laid across soil group. Baobab abundance and population structure were determined from the density and size class distribution, respectively. There were significant differences in plant height and plant density across Gonarezhou soil groups. Study sites on granophyres derived soil group indicated viable abundance and recruitment of baobab population. Whereas the study highlighted a concern over the unbalanced size structure distribution of baobab population on malvernia derived soil group, our results indicated that baobabs are in danger of extirpation on malvernia derived soil group. Baobab community in Gonarezhou tends to occur more densely along environmental gradient of soil group type as influenced by the underlying geological soil substrate of granophyres. Malvernia derived soil group is likely less ideal for baobab recruitment.

Status of woody vegetation along riparian areas in Gonarezhou National Park, Zimbabwe

We assessed the composition and structure of woody vegetation along Save, Runde and Mwenezi rivers in Gonarezhou National Park, Zimbabwe. Data were collected from 62 sample plots between April and May 2011 using a stratified random sampling design. Our results showed significant differences in plant height, shrub density and numbers of stems per plant across the three major perennial rivers. However, there were no significant differences in basal area, tree density, dead plant density, browsed plant density, fire damaged plant density and species diversity. Our findings suggest that disturbances, e.g., herbivory, are affecting the woody vegetation structure in all major rivers in Gonarezhou. We therefore, recommend for the continuous monitoring of riparian vegetation in Gonarezhou and other similar protected areas.

Diversity and structure of woody vegetation across areas with different soils in Gonarezhou National Park, Zimbabwe

Despite the importance of edaphic factors in influencing woody vegetation diversity and structure in savannas, there is still limited research on the topic across most savanna ecosystems. Here we investigate the differences and/or similarities of woody vegetation diversity and structure across areas with different edaphic factors (i.e. soil group) in Gonarezhou National Park, Zimbabwe. We stratified our study area into two strata based on soil group, namely siallitic soil in northern Gonarezhou and regosol soil in central Gonarezhou. Data were collected from 96 sample plots between March and April in 2011. Our results showed significantly higher woody species diversity in siallitic soil stratum compared to regosol soil stratum. In contrast, there were no significant differences in woody vegetation structure between the two study strata. Our results suggest that soil variations play an important role in influencing woody vegetation diversity more than woody vegetation structure in Gonarezhou. Future studies should investigate the role of soils on a specific woodland types composition and structure, and also determine the interactive effects between soils and other environmental determinants in Gonarezhou and similar protected areas in savanna ecosystems.

Varying Land-Use Has an Influence on Wattled and Grey Crowned Cranes’ Abundance and Distribution in Driefontein Grasslands Important Bird Area, Zimbabwe

Three species of cranes are distributed widely throughout southern Africa, but little is known about how they respond to the changes in land-use that have occurred in this region. This study assessed habitat preference of the two crane species across land-use categories of the self contained small scale commercial farms of 30 to 40 ha per household (A1), large scale commercial agriculture farms of > 50 ha per household (A2) and Old Resettlement, farms of < 5 ha per household with communal grazing land in Driefontein Grasslands Important Bird Area (IBA), Zimbabwe. The study further explored how selected explanatory (environmental) habitat variables influence crane species abundance. Crane bird counts and data on influencing environmental variables were collected between June and August 2012. Our results show that varying land-use categories had an influence on the abundance and distribution of the Wattled Crane (Bugeranus carunculatus) and the Grey Crowned Crane (Belearica regulorum) across Driefontein Grasslands IBA. The Wattled Crane was widely distributed in the relatively undisturbed A2 farms while the Grey Crowned Crane was associated with the more disturbed land of A1 farms, Old Resettlement and its communal grazing land. Cyperus esculentus and percent (%) bare ground were strong environmental variables best explaining the observed patterns in Wattled Crane abundance across land-use categories. The pattern in Grey Crowned Crane abundance was best explained by soil penetrability, moisture and grass height variables. A holistic sustainable land-use management that takes into account conservation of essential habitats in Driefontein Grasslands IBA is desirable for crane populations and other wetland dependent species that include water birds.

Pattern of Land-Use and Land Cover Changes in Driefontein Grassland Important Bird Area, Zimbabwe

We assessed land cover and land use change in Driefontein Grasslands Important Bird Area (Driefontein IBA), Zimbabwe, after the land reforms that took place in 2000, using remotely sensed satellite land cover images of 1995, 2000, 2005 and 2010. A drive transect was done for ground truthing. Data were analysed spatially in a Geographical Information System environment. Changes in land cover and land use proportions were recorded from 1995 to 2010 throughout the Driefontein IBA. The land cover classes of grassland and wetland showed a decrease, whereas land area under cultivation increased during 1995–2010. However, the woodland area marginally remained constant over the same time. We concluded that changes in land cover in the study area were largely driven by land use change, i.e., increase in cultivation, following the resettlement of people within the Driefontein IBA. It is likely that with increasing human population the natural habitat of the study area will be degraded further, negatively impacting key sensitive habitats such as wetlands, bird species, and other biodiversity. Threats to birds and wetlands habitats are also threats to human livelihoods because people in this semi-arid area depend on wetland ecosystem services for their survival. The study recommends continuous monitoring of Driefontein IBA for conservation of birds and their habitats.

Assessment of Market Potential for Horticultural Produce for Smallholder Farmers around Mutare City, Eastern Zimbabwe

We carried out a market assessment to understand horticulture market dynamics around Mutare City, eastern Zimbabwe. We used the value chain development approach of starting from understanding what the market wants then using information gathered to inform producers of horticultural produce. This approach is underpinned by market-led production concept. Our study results highlighted opportunities for the participation of smallholder farmers in the horticulture sub-sector value chain; it provides horticulture market intelligence to smallholder farmers as to which crops to grow, when and for which market niche. There are opportunities for smallholder farmers to fill the identified horticultural produce demand gap around Mutare City, eastern Zimbabwe. Smallholder farmers could capitalize on the opportunity of horticulture produce scarcity that exists across Mutare City, so as to engage in market-led horticulture production. Our study contributes to a knowledge base of horticulture value chain development around Mutare City, eastern Zimbabwe and related areas aimed at economic development and peri-urban and urban household poverty reduction, which involves addressing the major constraints and opportunities faced between farmers and traders at marketing systems along the given horticultural value chain.

Urban Horticulture for Food Security and Livelihood Restoration in Mutare City, Eastern Zimbabwe

Caritas International Zimbabwe implemented a food security restoration project targeting 1,000 vulnerable households in Mutare urban, eastern Zimbabwe. The objectives of the study were to determine whether targeted households were able to improve household income from sale of horticultural produce and to assess if these households were improving their household dietary diversity. Data were collected from a random sample of 100 household heads through interviews in December 2014. Desk reviews of Mutare urban food security project reports (baseline and end line surveys) were done. Results show that the urban horticulture project improved household income of about 70% (n = 70) of the targeted households by then. By December 2014 household food consumption score (FCS) among the project targeted households had improved beyond FCS > 35 as compared to baseline status. Mutare urban farmers were coached to practice market oriented horticulture production to enjoy both a diversified diet themselves and to sell to the market, through which they were getting a net profit of at least US

Socio-economic Determinants of Commercialization of Smallholder Rabbit Production in Mt Darwin District of Zimbabwe

80/month per household. We conclude that the Mutare urban horticulture project improved food and nutrition security and restore livelihoods for the targeted poor urban dwellers as at December 2014. Such market-led horticulture project formulation is a worthy feasibility studies for options for replication in related project area context which could be proposed.

Local People's Knowledge and Perceptions of Wildlife Conservation in Southeastern Zimbabwe

A study was conducted to analyze the socio-economic factors influencing commercialization of rabbit production in communal areas of Mt Darwin district of Zimbabwe. A study sample of 85 smallholder rabbit farmers was randomly selected across the study area. Data were collected by means of questionnaires and analyzed using descriptive and inferential statistics. Results revealed that 81.2% of respondents had attained some form of education and 63.5% had more than 6 years of rabbit farming experience. It was also observed that access to agricultural extension services, rabbit producer price, agricultural education and experience in rabbit keeping significantly (P < 0.05) influenced commercialization of rabbit farming by the farmers. It was concluded that improved access to agricultural extension services by a farmer, good rabbit producer prices, level of agricultural training attained by a farmer and years of rabbit farming experience of a farmer ease farmer’s ability to adopt commercial rabbit production and hence a higher production level. It was recommended that Zimbabwe national government create an enabling environment that promotes adequate technology transfer to farmers. Also, an investment in agro-industries that deal with the value chain components of rabbitory could be embarked upon by the government in order to improve on value-addition by farmers which would in-turn lead to more favourable prices.